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> Progressive springs.. here's the dirt!, Weltmeister 180s specifically
bondo
post Jun 5 2006, 05:38 PM
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Ever wonder what the specifics of a progressive rate spring are? I did. They're sold as "180", but they're "progressive" so that can't be enough to go by.

The springs I tested are Weltmeister progressive 180s, and have a pretty clear wide coil spacing section, then a narrow one. They look to be pretty constant within each section. One of the springs is a touch longer than the other, which shows up in the graph.

When lightly loaded they are about a 100 pound rate, and when heavily loaded, they are about a 160 pound rate. The transition happens at about 340 lbs of force and about 3.75" of compression.

I'm using these for a V8 conversion, and since it'll be a street car, these will probably work quite nicely. Here's a graph:


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bondo   Progressive springs.. here's the dirt!   Jun 5 2006, 05:38 PM
Andyrew   Cool info! Good to have some actual facts... ...   Jun 5 2006, 05:43 PM
bondo  
 

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